Cheesy Hash Brown Casserole (Printable)

Crispy-topped, creamy hash brown casserole that's flavorful, cheesy, and easy to serve for gatherings.

# What You Need:

→ Potatoes

01 - 1 bag (30 oz) frozen shredded hash browns, thawed

→ Dairy

02 - 2 cups shredded sharp cheddar cheese
03 - 1 cup sour cream
04 - 1/2 cup unsalted butter, melted
05 - 1 cup whole milk

→ Aromatics

06 - 1 small onion, finely chopped
07 - 2 cloves garlic, minced

→ Condiments & Seasonings

08 - 1 can (10.5 oz) condensed cream of mushroom soup
09 - 1 teaspoon salt
10 - 1/2 teaspoon black pepper

→ Topping

11 - 1 1/2 cups cornflakes, lightly crushed
12 - 2 tablespoons unsalted butter, melted

# How-To:

01 - Preheat oven to 350°F. Lightly grease a 9x13-inch baking dish with nonstick spray or butter.
02 - In a large mixing bowl, combine thawed hash browns, shredded cheddar, sour cream, melted butter, whole milk, chopped onion, minced garlic, condensed cream of mushroom soup, salt, and pepper. Stir until the mixture is homogeneous.
03 - Pour the mixture into the prepared baking dish and spread evenly with a spatula.
04 - In a small bowl, toss crushed cornflakes with melted butter until well coated. Evenly sprinkle the cornflake topping over the surface.
05 - Bake for 45 to 50 minutes or until the topping is golden-brown, edges are bubbling, and the center reads hot throughout.
06 - Allow the casserole to rest for 5 to 10 minutes before serving to set the texture and ease portioning.

# Expert Hacks:

01 -
  • The golden, crackling cornflake topping is like a secret textural contrast that keeps everyone coming back for more.
  • It’s nearly impossible to mess up, which is exactly why it’s become my unofficial holiday hero side dish.
02 -
  • Rushing the thaw on hash browns makes the whole casserole watery, so take the time—or you’ll regret it every bite.
  • Switching to hand-grated cheese truly makes a difference in melty richness (pre-shredded doesn’t melt quite the same).
03 -
  • Take your time mixing the base so the cheese and seasonings get into every bite—rush it and some forkfuls will be bland.
  • Letting the casserole rest makes all the difference; it’s tempting to dive right in, but patience rewards you with perfect slices and intact topping.
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